#head{
    width: 100%;
    position: fixed;
    top: 0;
}
.tishiaa{
    width: 100%;
    height: 80px;
    line-height: 25px;
    background-color: darkgrey;
    text-align: center;
    font-size: 12px;
    margin-top: 120px;
}
.nian{
    width: 100%;
    height: 60px;
    line-height: 60px;
    position: sticky;
    top:120px;
    background-color: white;
    margin-bottom: 10px;
    h2{
        float: left;
        margin-left: 20px;
    }
    button{
        float: right;
        margin:20px 10px 0 0;
    }
}
.banxin{
    width: 100%;
    min-height: 800px;
    .b1{
        width: 90%;
        margin: 0 auto;
        display: flex;
        flex-wrap: wrap;
        a{
            width: 23%;
            margin-right: 2%;
            margin-bottom: 20px;
            line-height: 30px;
            img{
                width: 100%;
                height: 300px;
            }
            span{
                float: right;
            }
        }
        .asd:hover{
            box-shadow: 0 0 10px 10px #888888;
        }
    }
    
}
#test1{
    width: 100%;
    text-align: center;
}